C'mon, author, miss me with this jealous cockblocking pet crap. Make "Ryuu" turn into a slime girl attached to the MC or something. This is my fluffy vanilla manga. It doesn't need any drama.
Admittedly, though, the MC has virtually no redeeming qualities and is likely one of the most useless protagonists I've ever seen, so I'm not really comfortable rooting for him ... But as a reader I don't have any other alternative so I'll take what I can get.
(If, for some reason, you, the author, are reading this, because you know English and you like to browse through foreign comment threads, as highly unlikely as that may seem, and if you're also coincidentally open to suggestions, please improve the protagonist a little. I know he will never learn the language (I mean, look at the title), but maybe you could have him teach her his language instead, or ... Well, give us reader something to work with, because so far the protagonist is a below-average looking and depressingly lacking in initiative, not to mention unintelligent, piece of cardboard that'd be underwhelming even in a crowd of generic harem protagonists, and that's no easy feat.)